As of the last 3-4 weeks, my e-commerce website has fallen off the face of Google. It used to rank on the first page SERPs for MANY keywords. Now it cannot be found on the first 3-4 pages. When I dig deep, I am able to find pages but they are random internal pages that show up -- which I have not even worked to rank. When I do a site search specifically for my website, Google does show my index page as being indexed. Also I checked Google Webmaster Tools and it does not say my website is penalized and there are no issued from what I can tell... Any ideas? I am loosing a TON of revenue because of this. Any help/guidance is appreciated.